import java.util.Scanner;
/**
 * @Question test
 * @Date 2022/11/26 12:59
 * @Solution
 */
public class test {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("设置大圆半径");
        double R=scanner.nextDouble();
        System.out.println("设置小圆半径");
        double r=scanner.nextDouble();
        Model
    }
}
